Delayed control timelock



DELAYED CONTROL TIMELOCK Filed Aug. 14, 1933 3 Sheets-Sheet 2 WYZZ.

April 16, 1935. w. c. MILLER 1,998,201

DELAYED CONTROL TIMELOCK Filed Aug. 14, 1933 3 Sheets-Sheet 5 & 7 6 965 h @T g 55. 3a my ,9

Q J j ll 5 t 39 '1 l 35 55 Patented Apr. 16, 1935 UNITED STATES DELAYED CONTROL TIMELOCK William C. Miller, I Canton, Ohio, assignor to Diebold Safe & Lock 00., Canton, Ohio, acorporation of Ohio Application August 14, 1933, Serial No. 685,136

9 Claims.

This invention relates to a delayed control timelock which is equipped with means for preventing the opening of asafe door until after a predetermined time has'elapsed after the combination has been set for unlocking.

An object of the invention is to provide automatic means for winding the clockwork or energizing the time mechanism when the bolts of the door are thrown into locked position or partially moved for unlocking- Other specific objects and advantages will appear as the specification proceeds.

Broadly, the illustrated apparatus consists of a combination lock, which may be of a well known construction and which is equipped with looking boltwork, an auxiliary guard for'preventing the complete withdrawal of the boltwork, clockwork equipped with means for releasing the guard after alapse of time, and cooperating means .associated with the boltwork and the clockwork for winding the main spring of the clockwork as the boltwork is manipulated. The invention also ineludes means for varying the extent of the delayed time movement and other specific improvements which will be set forth hereinafter.

The invention is illustrated, in a preferred embodiment, in the accompanying drawings, in Which- Figure l is a broken front view of a safe wall and the hinged doorof the safe; Fig. 2, afront view in elevation of the boltwork on the inner side of the door; Fig. 3, a broken rear view of the timework casing showing the auxiliarylocking mechanism and automatic winding means; Fig. 4, a top plan view of the clockwork casing and associated mechanism; Fig. 5, a View in elevation of the tumblers, auxiliary lock, etc., the view being taken at line 5 of Fig. 4; Fig. 6, a broken detail view of means for winding the main spring; Fig. 7, a sectional detail view showing the auxiliary locking device; Fig. 8, a front view in elevation, the View being taken as indicated at line 8 of Fig. 4; Fig. 9, a sectional View, the section being taken as indicated at line 9 of Fig. 8; and Fig. 10, a plan View of the timing mechanism and associated parts.

In the illustration given, A indicates a safe wall; B, a door hinged to the wall by hinges B; C, boltwork carried by the door; and D, timing mechanism automatically "wound by manipulation of boltwork C and serving after a predetermined time to release an auxiliary lock.

. The safe A may be of any suitable constructlon. The door B may also be of any suitable con.-

- drawal arm 32.

struction. In the illustration given, the dooris provided with anouter wall 10, and on its inner side with a rim portion II. Rotatably mounted within the rim member II isa locking ring I2. The locking ring I2 is held in position 5; by the locking bolts'which will be later described, and by a flange member I3 which is bolted to the main wall Ill of the door. The annular rim flange I I of the door is provided with radial bolt openings I4 through which extend the four lo'ck- 10: ing bolts I5. The locking bolts I5 are provided at their'rear ends with pins I6 which engage inclined slots H in the locking ring I2. When the ring I2 is rotated, the inclined slots I'I serve to reciprocate the bolts I5 within guideways I4. 15; The bolts I 5 are adapted to engage openings (not shown) in the wall'of safe A. To rotate the locking ring I2, I have provided the following mechanism. A shaft I8 extends through door B and is provided on its exterior'side with a handle I I9. 20 On its inner side, the shaft I8 is rigidly secured to a slotted arm 20 adapted to engage apin 2| fixedly secured to the ring I2. When the handleequipped rod I8 is rotated,the arm 2Bengagespin M and causes the ring I2 to swing in one direc- 25. tion and thereby reciprocate bolts I5.

The locking'ring I2 is provided on one side'with a notch 22 adaptedto be engaged'by bolt 23' which is controlled by a combination lock Z I. The engagement of bolt 23 with notch 22 pre- 30'. vents rotation of the ring I2 and maintains the bolts I5 in locked position.

In order to prevent the withdrawal of bolt 23 from locking engagement with ring I2, until after a predetermined time has elapsed, I provide an 35 auxiliary locking member in the form of a springurged pin 25 guided within the lock'casing 26 for vertical movement and adapted to engage a recess 21 in bolt 23, as shown more clearly in Fig. I. The pin is provided with a flanged collar 2B, and the 40 spring 29 engages the ilange' 28 and urges the pin downwardly into engagement with recess 21.

The combination lock '24 may be of the usual well known construction and need not be de- 45 scribed in detail. It consists of aseries of tumblers 30 having notches which are aligned to receive a bar 3! carried by the bolt-withdrawal arm 32. Secured to the inner .end of the stem 33 is the'usual fixed disk 34 provided with a recess 35 50 adapted to receive the finger 36 of the bolt-with.-

Engagement of the spring-urged pin 25,-however, with the recess 21 in bolt '23 normally prevents withdrawal of bolt 23 until the lock releasing mechanism, which will now be 55 described, has been set in operation to remove pin 25 from engagement with recess 21.

Housed within casing part 26 is timing mechanism which, when wound, and set in motion, actuates release mechanism for releasing pin 25 from engagement with bolt 23. The timing mechanism is of well known construction and need not be described in detail. As shown more clearly in Figs. 9 and 10, a pair of plates 3'! and 38 are spaced apart to provide a chassis for the chain of gears comprising the timing mechanism. A main spring is housed within casing 39 and is connected through a series of shafts and gears with a large gear wheel 48 carried by shaft 4| and spaced from the plate member 31. The gear wheel 48 is connected by pinion 42 and gear 43 with the winding shaft 44. The shaft 44 extends through the rear wall of easing 26 and carries on its outer end a mutilated gear 45. The gear 45, as will be later described, cooperates with members associated with the boltwork for winding the main spring of the clockwork.

The pin-release mechanism consists of a shaft 46 rotatably mounted in plates 31 and 38, and carries on its outer end, a release arm 41 adapted to engage the flange collar 28 carried by pin 25. The rotation of shaft 46 in one direction causes arm 41 to raise the flange 28 and thus to free pin 25 from recess 21. To the other end of shaft 46 is secured a cam arm 48. A post 49 carried by gear wheel 40 is adapted to be brought into contact with the extremity of cam arm 48 and thereby to rotate shaft 46. If desired, a pin 58, carried by gear wheel 40, may be aligned with a pin 5| carried by plate 31 to limit the rotary movement of gear wheel 48.

To restrain the timing mechanism against movement until after the combination has been set, I employ the following mechanism. A vertically shiftable slotted bar 52 is carried by posts 53 and drawn downwardly by spring 54. The bar carries at its top a horizontal flange 55 which rests upon the bolt-release bar 32, as shown more clearly in Fig. 5. At its other end, the bar 52 is provided with a lateral extension 56 adapted to engage an escapement or blades 51. When the bar 52 is raised by engagement of flange 55 with draw-arm 32. the extension 56 engages the members 51 and stops the clockwork. When, however, the combination has been set, and the arm 32 drops to the position shown in Fig. the members 51 are released and the clockwork begins to run. If, as will be later described, the clockwork is wound by the partial movement of the boltwork toward releasing position, it will be unnecessary to employ the restraining mechanism described, and the bar 52 and its related parts may be omitted.

The winding mechanism is preferably operated by movement of the boltwork either toward looking position or partially toward released position. In the illustration given, "the locking mechanism is actuated by movement of the boltwork toward locking position, and the parts shown for this purpose are as follows. A floating winding disk 58 is freely carried on shaft 44. The mutilated gear 45 is fixed to shaft 44. A link 59 is pivotally secured to one of the bolts 15 and to disk 58 near its periphery. A pawl member 60 is pivotally secured to disk 58 at a point near the edge of the disk. A spring 6! is also secured to disk 58 and tends to urge pawl 68 upwardly. The outer end of pawl .60 is engaged by pin 62 which is fixed to locking bolt 23. When the bolt is in the position shown in Fig. 2, that is in looking position,

the pin 62 engages pawl 68 and holds it out of engagement with the gear member 45.

The gear wheel 48, as shown more clearly in Fig. 3, may be provided with spaced numerals which become visible through the aperture 63 in the casing 26 The numerals serve to indicate the degree of winding of the spring and the period of time which will elapse before the release of pin 25 is effected.

Operation In the operation of the lock, assuming that the door is in open position, the door B is swung on hinges B to closed position, and the handle I9 turned so as to rotate ring l2 and thereby swing bolts l5 to closed position. As the bolts l5 move to their outer limit, the link 59 is drawn downwardly thus rotating the disk 58. The locking bolt 23 being in retracted position, the spring 5! holds the pawl 60 in engagement with the gear 45. In this manner, the disk 58 islocked to gear 45 and as the disk rotates in counterclockwise direction, the gear 45 and shaft 44 also rotate, thus winding the main spring of the clockwork. If desired, the boltsmay be thrown several times so as to increase the winding of the spring. In the winding of the clockwork, the gear wheel 40 moves in a counterclockwise direction, and the actuating pin 49 is moved farther away from the cam arm 48. Thus, the greater the extent of the Winding, the longer time required for the pin to be brought forward into contact with cam arm 48. When the bolts have been thrown into closed position, the locking bolt 23 may then be drawn forward into engagement with the locking notch 22, as shown more clearly in Fig. 2. In this position, the pin 62, carried by bolt 23, engages the end of pawl 60 and holds it out of engagement with gear 44. The clockwork is now ready to cperate as soon as the detent 56 releases the escapement or blades 51.

In the operation of the mechanism illustrated, the bar 52 is held in raised position and thereby the detent 56 in engagement with members 5?, as long as the bolt arm 32 is in raised position. When, however, the combination is set so that the arm 32 drops into the lower position shown in Fig. 5, the bar 55 also drops to lower position, under the influence of spring 54, and frees the members 51. The main spring then starts to unwind and member 48 is slowly rotated in a clockwise direction, the pin 48 being'eventually brought into contact with lever arm 48. The pin 49 slowly moves arm 58 and thereby shaft 46 and release-arm 41. Arm 41 engages flange 28 of pin 25 and raises the pin out of contact with recess 27. The bolt 23 may then be retracted to free the locking ring I 2. The handle l9 may be swung to turn ring I2 and retract bolts l5.

The mutilated gear 45 permits winding of the main spring up to a certain point and prevents winding beyond that point. The pawl 60, when it reaches the point on the gear 45 where the teeth are missing, simply glides over the periphery of the gear without moving it.

While in the illustration given, I have specified clockwork as the power means, it will be understood that other timing mechanism may be employed.

The foregoing detailed description has been given for clearness of understanding only, and no unnecessary limitations should be understood therefrom, but the appended claims should be construed as broadly as permissible, in View of the prior art.

I claim:

1. Locking mechanism comprising, door-locking boltwork, main locking means serving to prevent retraction of said boltwork, auxiliary means for preventing retraction of the boltwork, clockwork arranged to operate to release said auxiliary locking means after a predetermined period, means associated with said boltwork for winding said clockwork when the boltwork is manipulated and for increasing the winding thereof by repeated manipulations, and means for setting said clockwork into operation.

2. A look comprising a boltwork, auxiliary guard means for preventing withdrawal of the boltwork, timing mechanismarranged to operate to release said guard means after a predetermined time, a combination lock mechanism, means associated with said boltwork vfor automatically winding said clockwork when the boltwork is manipulated and for increasing the winding thereof by repeated manipulations, and means operated by the setting of the combination for unlocking for starting said clockwork.

3. In means of the character set forth, doorlocking boltwork, an auxiliary guard adapted to prevent unlocking thereof, a combination lock serving to prevent the withdrawal of said boltwork, clockwork adapted to release said auxiliary guard, and clockwinding means actuated by said boltwork, the winding of the clockwork being increased by repeated manipulations of the boltwork.

4. Mechanism of the character set forth, comprising door-locking boltwork, main locking means serving to prevent retraction of said boltwork, auxiliary guard means for preventing retraction of said boltwork, clockwork adapted to release said auxiliary guard after a predetermined time, means operated by the movement of said boltwork for winding said clockwork, and means effective by repeated manipulations of the boltwork for varying the period through which said clockwork will operate before releasing said auxiliary guard.

5. Locking mechanism comprising: door-locking boltwork, main locking means serving to prevent retraction of the boltwork, auxiliary means for preventing retraction of the boltwork, clockwork adapted to release said auxiliary guard after a predetermined time, said clockwork being provided with a winding gear, a winding pawl movably mounted to engage said winding gear, means actuated by the movement of said boltwork for moving said winding pawl, and means carried by said main locking means for rendering said winding pawl inoperative when said main locking means is in locked position.

6. Locking mechanism comprising: door-locking boltwork, main locking means serving to prevent retraction of said boltwork, auxiliary means for preventing retraction of the boltwork, clockwork arranged to operate to release said auxiliary locking means after a predetermined period, said clockwork being provided with a winding gear, a winding pawl movably mounted to engage said winding gear to effect winding of the clockwork, means associated with said boltwork for actuating said winding pawl when the boltwork is manipulated, and means associated with said main locking means for rendering said winding pawl inoperative except when said main locking means is free of engagement with said boltwork.

7. Locking mechanism comprising: door-locking boltwork, main locking means serving to prevent retraction of said boltwork, auxiliary means for preventing retraction of the boltwork, clockwork arranged to release said auxiliary looking means after a predetermined period, said clockwork being provided with a winding gear, a rotatably mounted plate adjacent said winding gear, a pivoted pawl carried by said plate and adapted to engage said gear to effect the winding of the clockwork, link mechanism connecting said rotatable plate and said boltwork whereby the plate is moved through an arcuate path when the boltwork is reciprocated, and a pin carried by said main locking means and adapted to engage said pawl to render it inoperative except when said main locking means is free of the boltwork.

8. Locking mechanism for safe doors and the like comprising: boltwork, auxiliary guard means controlling the withdrawal of the boltwork, clockwork arranged to operate to release said guard means after a predetermined time; a combina tion lock mechanism, means for automatically winding the clockwork when the boltwork is manipulated to one limit of its movement and for increasing the winding thereof to vary the period through which said clockwork will operate before releasing the auxiliary guard means, and means controlled by said combination lock mechanism whereby said clockwork may be set into operation after the combination has been set for unlocking.

9. Locking mechanism for safe doors and the like comprising: boltwork, auxiliary guard means controlling the withdrawal of the boltwork, clockwork arranged to be set in motion to release said guard means after a predetermined time, and means for eiiecting the winding of said clockwork to a variable extent, such winding means including means for winding by manipulation of the boltwork.

WILLIAM C. MILLER. 

